Tadaka could refer to:
- Tadaka, the heimin.
- Isawa Tadaka, the Elemental Master and Phoenix Clan Thunder.
- Hida Tadaka, the Crab Clan Champion.
- Hida Tadaka, father of Hida Tsuneo.
- Matsu Tadaka, the commander of the City of the Prosperous Dawn.
- Seppun Tadaka, the Emerald Champion in the alternate timeline known as the Iron Empire.
- Tadaka no Oni, the oni given name by Isawa Tadaka.